Keywords: PSM V51 D367 Azaleas.png Azaleas http //www archive org/details/popularsciencemo51newy Popular Science Monthly Volume 51 1897 author PD-old Extracted image from book to grayscale cropped whitespace ineuw http //www archive org/details/popularsciencemo51newy Popular Science Monthly Volume 51 Popular Science Monthly illustrations/Volume 51 Flowers of the United States |